JPS589350B2 - Refrigerator cooler - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in coolers for refrigerators and freezers.

Conventional coolers for refrigerators and refrigerators have generally been widely used in square or rectangular shapes.

This rectangular cooler not only cannot be installed close to the door, but also has to be installed in a corner due to the location of the object to be cooled, which limits the installation location.

In addition, when installed inside a refrigerator, there is a large overhang from the ceiling surface, etc. Therefore, if the items to be cooled are loaded high on the front of the cooler (outlet side), the cold air will blow directly onto the items to be cooled. This may lead to damage or loss of the part to be cooled.

It also obstructed the circulation of cold air, necessitating careful consideration and ingenuity in cargo loading, and making it impossible to improve work efficiency.

Furthermore, since the cold air is blown only in one direction, it is difficult to maintain a uniform temperature inside the refrigerator.

As mentioned above, conventional square coolers have various drawbacks, so it is possible to install them anywhere, improve the circulation of cold air, prevent damage to the objects to be cooled, and efficiently carry out loading operations. There was a strong desire to develop a new cooler for refrigerators and freezers.

The present invention was developed in response to the above-mentioned needs, and consists of arranging a large number of cooling plate fins in a circular pattern to form a donut-shaped cooling body, and installing a fan at the upper end of the central part of this cooling body. Inhaling internal air from the outer peripheral side of the cooling body,
After cooling, the cool air is blown out from the upper part of the cooling body to improve the circulation of cold air inside the refrigerator, keep the temperature inside the refrigerator constant at all times, and prevent damage to and loss of weight of the objects to be cooled. be.

Another object of the present invention is to arrange the end portions of the plate fins in each row to be located in the gaps between adjacent plate fins, thereby creating turbulent flow within the cooling body and improving the heat transfer coefficient. It is something to do.

A further object of the present invention is to prevent frost formation by arranging the plate fins so that the gaps between the plate fins become narrower on the inner circumferential side than on the outer circumferential side.

A further object of the present invention is to facilitate the loading of objects to be cooled by installing the refrigerant on the ceiling surface of the refrigerator, thereby achieving efficient loading work.

The present invention will be described based on the embodiment shown in the drawings. A donut-shaped cooling body 2 is formed by disposing a large number of vertically long plate fins 1 on a plurality of cooling pipes 12 arranged in a plurality of circular rows. The cooling body 2 is installed on the ceiling surface 9 in the refrigerator, and the end portions of the plate fins 1 in each row are adjacent to each other.
The plate fins 1 are installed so that they are located in the gap between them, and the gap between the plate fins 1 is sequentially narrower on the inner circumference side than on the outer circumference side, and the center part of the cooling body 2 is used as a cavity part 3. A fan 4 is provided at the upper end of this cavity 3, and a drain pan 13 is provided on the lower surface of the cooling body 2 to close the lower surface of the cooling body 2, and the outer side 5 of the cooling body 2 is used as an intake for air inside the refrigerator. The cavity 3 is used as a flow path for the cold air that has passed through the plate fins 1, and the upper part of the cooling body 2 is used as an outlet for the cold air.

In addition, in the figure, 6.7.8 is an arrow indicating the circulation path of the air inside the refrigerator, 10 is a mounting rod for attaching the cooling body 2 to the mounting base 15, 11 is a mounting rod for the fan 4, and 14 is a top plate. .

The present invention has the above-mentioned configuration, so that when the cooler is installed on the ceiling surface 9 inside the refrigerator and is operated, the air inside the refrigerator is distributed over the entire outer peripheral side 5 of the cooling body 2 by the action of the fan 4 as shown in FIG. That is, it is sucked into the cooling body 2 at a wide angle of approximately 360 degrees, is cooled by contacting a large number of plate fins 1, and then passes through the flow path of the cavity 3 and rises, colliding with the lower surface of the mounting base 15. Then, it is blown out into the refrigerator from the upper part of the cooling body 2 parallel to the ceiling surface 9.

The present invention has the above configuration, so that when it is installed on the ceiling surface 9 in the refrigerator and operated, the air in the refrigerator is transferred to the outer peripheral side 5 of the cooling body 2.
It is sucked into the cooling body 2 at an angle of almost 360 degrees from the center, and after being cooled, it passes through the cavity 3 and collides with the lower surface of the mounting base 15, and then it is drawn from the upper part of the cooling body 2 parallel to the ceiling surface 9. It is blown out into the refrigerator.

Therefore, according to the present invention, since the cooler is formed in a circular shape, the following effects can be achieved.

First, since the air inside the refrigerator is sucked in at an angle of approximately 360 degrees, the suction area is much wider than that of conventional square coolers, which improves cold air circulation and increases cooling efficiency.

Furthermore, since the plate fin width can be narrowed, frost buildup is dispersed, suction resistance is reduced, and the cooler itself can be downsized.

Not only that, the gap between the plate fins is larger on the outer circumference side than on the inner circumference side, which greatly prevents frost formation, and at the same time, even in the case of frost formation, suction resistance is reduced. There is no risk of it becoming larger, and a decrease in cooling capacity is avoided.

Next, the cold air blowing part is located at the top of the cooler, and the cold air is blown out parallel to the ceiling surface at a 360 degree angle, distributing it over the entire surface of the refrigerator, resulting in good cold air circulation and uniform temperature inside the refrigerator. Not only this, but also because the cold air does not directly hit the object to be cooled, there is no chance of damage or loss of the object to be cooled.

Further, since the cooler according to the present invention has a small overhang from the ceiling surface, special consideration is not required when loading objects to be cooled, unlike in the conventional cooler.

Therefore, loading work becomes easier and work efficiency can be improved.

Furthermore, although the ideal installation location for the cooler according to the present invention is at the center of the ceiling inside the refrigerator, there is no significant difference in the cooling effect even if it is installed at any other location, so the selection of the installation location is different from the conventional one. It is extremely easy and convenient to install.

Furthermore, in the circulation of air inside the refrigerator, while the suction wind speed from the outer circumferential side of the cooler is average, the wind speed and volume on the outlet side increase as you move upward. There is no risk of cold air being sucked directly into the cooler and causing a short circuit.

At the same time, the strong wind speed and large air volume above the cooler allows the cooled air to be thoroughly dispersed throughout the refrigerator, keeping the temperature inside the refrigerator uniform at all times and maximizing its function as a refrigerator-freezer. It is something that can be done.

In addition, since multiple rows of plate fins are arranged and the ends of the plate fins in each row are located in the gaps between adjacent plate fins, turbulence is created in the air sucked into the cooler. Due to the generation of this turbulent flow, the air that did not initially contact the plate fins comes into contact with the plate fins one after another and is cooled.

Therefore, the heat transmission coefficient is extremely good, increasing the cooling effect, reducing the operation time of the cooler, and reducing the cooling area, which allows the cooler itself to be made smaller. be.

As described above, the cooler according to the present invention not only prevents the reduction in refrigerating capacity due to frosting to the maximum extent possible, and also eliminates damage or loss of objects to be cooled due to cold air, it also maintains a uniform temperature inside the refrigerator. In addition, it is possible to arrange the objects to be cooled relatively freely, and the installation position of the cooler can also be selected relatively freely.
Furthermore, since the protrusion of the cooler from the ceiling is small, the refrigerator-freezer can be widely used, making it extremely excellent.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; FIG. 1 is a partially longitudinal front view of the present invention, FIG. 2 is a plan view showing the arrangement of plate fins and the air suction state of the present invention, and FIG. FIG. 4 is a partially cutaway plan view showing another embodiment of the plate fin, and FIG. 5 is a part showing the whole of the same. FIG. 6 is an enlarged sectional view taken along the line A-A of the same as above, and FIG. 7 is a plan view showing the state of air circulation. 1 is a plate fin, 2 is a cooling body, and 4 is a fan.

Claims (1)

[Claims] 1. A donut-shaped cooling body 2 is formed by arranging a large number of vertically elongated plate fins 1 on a plurality of cooling pipes 12 arranged in a plurality of circular rows, and this cooling body 2 is installed on the ceiling surface 9 inside the refrigerator. The end portions of the plate fins 1 in each row are installed so as to be located in the gaps between adjacent plate fins 1, and the gaps between the plate fins 1 are sequentially narrower on the inner circumference side than on the outer circumference side. The central part of the cooling body 2 is a cavity 3, a fan 4 is provided at the upper end of the cavity 3, and a drain pan 13 is provided on the lower surface of the cooling body 2. The outer peripheral side 5 of the cooling body 2 is used as an intake port for the air inside the refrigerator, the cavity 3 is used as a flow path for cold air that has passed through the plate fins 1, and the upper part of the cooling body 2 is used as a cold air outlet. A cooler for refrigerators and freezers that is characterized by: